1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
/*
* tpm_tis_sysbus.c - QEMU's TPM TIS SYSBUS Device
*
* Copyright (C) 2006,2010-2013 IBM Corporation
*
* Authors:
* Stefan Berger <stefanb@us.ibm.com>
* David Safford <safford@us.ibm.com>
*
* Xen 4 support: Andrease Niederl <andreas.niederl@iaik.tugraz.at>
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
* Implementation of the TIS interface according to specs found at
* http://www.trustedcomputinggroup.org. This implementation currently
* supports version 1.3, 21 March 2013
* In the developers menu choose the PC Client section then find the TIS
* specification.
*
* TPM TIS for TPM 2 implementation following TCG PC Client Platform
* TPM Profile (PTP) Specification, Familiy 2.0, Revision 00.43
*/
#include "qemu/osdep.h"
#include "hw/qdev-properties.h"
#include "migration/vmstate.h"
#include "tpm_util.h"
#include "hw/sysbus.h"
#include "tpm_tis.h"
typedef struct TPMStateSysBus {
/*< private >*/
SysBusDevice parent_obj;
/*< public >*/
TPMState state; /* not a QOM object */
} TPMStateSysBus;
#define TPM_TIS_SYSBUS(obj) OBJECT_CHECK(TPMStateSysBus, (obj), TYPE_TPM_TIS_SYSBUS)
static int tpm_tis_pre_save_sysbus(void *opaque)
{
TPMStateSysBus *sbdev = opaque;
return tpm_tis_pre_save(&sbdev->state);
}
static const VMStateDescription vmstate_tpm_tis_sysbus = {
.name = "tpm-tis",
.version_id = 0,
.pre_save = tpm_tis_pre_save_sysbus,
.fields = (VMStateField[]) {
VMSTATE_BUFFER(state.buffer, TPMStateSysBus),
VMSTATE_UINT16(state.rw_offset, TPMStateSysBus),
VMSTATE_UINT8(state.active_locty, TPMStateSysBus),
VMSTATE_UINT8(state.aborting_locty, TPMStateSysBus),
VMSTATE_UINT8(state.next_locty, TPMStateSysBus),
VMSTATE_STRUCT_ARRAY(state.loc, TPMStateSysBus, TPM_TIS_NUM_LOCALITIES,
0, vmstate_locty, TPMLocality),
VMSTATE_END_OF_LIST()
}
};
static void tpm_tis_sysbus_request_completed(TPMIf *ti, int ret)
{
TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(ti);
TPMState *s = &sbdev->state;
tpm_tis_request_completed(s, ret);
}
static enum TPMVersion tpm_tis_sysbus_get_tpm_version(TPMIf *ti)
{
TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(ti);
TPMState *s = &sbdev->state;
return tpm_tis_get_tpm_version(s);
}
static void tpm_tis_sysbus_reset(DeviceState *dev)
{
TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(dev);
TPMState *s = &sbdev->state;
return tpm_tis_reset(s);
}
static Property tpm_tis_sysbus_properties[] = {
DEFINE_PROP_UINT32("irq", TPMStateSysBus, state.irq_num, TPM_TIS_IRQ),
DEFINE_PROP_TPMBE("tpmdev", TPMStateSysBus, state.be_driver),
DEFINE_PROP_BOOL("ppi", TPMStateSysBus, state.ppi_enabled, true),
DEFINE_PROP_END_OF_LIST(),
};
static void tpm_tis_sysbus_initfn(Object *obj)
{
TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(obj);
TPMState *s = &sbdev->state;
memory_region_init_io(&s->mmio, obj, &tpm_tis_memory_ops,
s, "tpm-tis-mmio",
TPM_TIS_NUM_LOCALITIES << TPM_TIS_LOCALITY_SHIFT);
sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mmio);
sysbus_init_irq(SYS_BUS_DEVICE(obj), &s->irq);
}
static void tpm_tis_sysbus_realizefn(DeviceState *dev, Error **errp)
{
TPMStateSysBus *sbdev = TPM_TIS_SYSBUS(dev);
TPMState *s = &sbdev->state;
if (!tpm_find()) {
error_setg(errp, "at most one TPM device is permitted");
return;
}
if (!s->be_driver) {
error_setg(errp, "'tpmdev' property is required");
return;
}
}
static void tpm_tis_sysbus_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
TPMIfClass *tc = TPM_IF_CLASS(klass);
device_class_set_props(dc, tpm_tis_sysbus_properties);
dc->vmsd = &vmstate_tpm_tis_sysbus;
tc->model = TPM_MODEL_TPM_TIS;
dc->realize = tpm_tis_sysbus_realizefn;
dc->user_creatable = true;
dc->reset = tpm_tis_sysbus_reset;
tc->request_completed = tpm_tis_sysbus_request_completed;
tc->get_version = tpm_tis_sysbus_get_tpm_version;
}
static const TypeInfo tpm_tis_sysbus_info = {
.name = TYPE_TPM_TIS_SYSBUS,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(TPMStateSysBus),
.instance_init = tpm_tis_sysbus_initfn,
.class_init = tpm_tis_sysbus_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_TPM_IF },
{ }
}
};
static void tpm_tis_sysbus_register(void)
{
type_register_static(&tpm_tis_sysbus_info);
}
type_init(tpm_tis_sysbus_register)
|
